?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F450%2F&rft.title=Production+life+of+tube+swimmers&rft.creator=Robinson%2C+N.&rft.subject=Materials&rft.description=Two+humped+mandrels%2C+called+swimmers%2C+are+used+in+the+special+tube+drawing+process+of+Bundy+Tubing+Company+to+size+internal+diameters+of+tubes+formed+from+double-wrapped+steel+strip.+The+aim+of+this+study+was+to+determine+key+factors+to+promote+increased+life+of+swimmers+which+currently+fail+mostly+by+metal+pick-up.+There+was+insufficient+data+to+build+mathematical+models+for+swimmer+failure%3B+it+is+recommended+that+systematic+data+collection+take+place+using+statistical+quality+control+principles.&rft.date=1991&rft.type=Study+Group+Report&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F450%2F1%2FProduction-life-of-tube-swimmers.pdf&rft.identifier=++Robinson%2C+N.++(1991)+Production+life+of+tube+swimmers.++%5BStudy+Group+Report%5D+++++